 
            | 大同PX4模具鋼物理性能(W/m•℃)括號內(nèi)cal/cm•sec•℃ | |||||
| 20 | 100 | 200 | 300 | 400 | |
| PX4 | 42.45 (0.1014) | 42.36 (0.1012) | 42.07 0.1005() | 39.22 (0.0937) | 38.80 (0.0927) | 
| SCM440 | 42.28 (0.1010) | 41.61 (0.0994) | 42.70 (0.1020) | 39.39 (0.0941) | 38.00 (0.0908) |